gear change - speedo tuning
03-02-2010, 03:45 PM
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gear change - speedo tuning this is on a 6 speed 2000 Camaro. what do I need to change in HPtuners when I swap from a 3.42 gear to a 3.73 gear.
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03-02-2010, 11:38 PM
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if u want change your gear in HP.
1.open up your hp file
2. select speedometer
3. then next select tools drop down to units converter
4. in the box it said tire size calc
5. type in your tire size, example mine is 295 40 R18 once you type it in you get tire height
6. copy that..example mine come up to 27.3
7. click on tools and choose calc
8. take 27.3 divide by 3.73 or 4.1 depend on what set of gear you got i have 4.1 so mine will be 6.66 round it up remember that # go back to speedometer type in 6.66 and click commit done save and upload
hope you understand if not pm me
here is another example of calculation
if my tire were 275/40/r17 and my tire height will be 25.7 , i take 25.7 divide by 3.73=6.89
3.73 is gear
1.open up your hp file
2. select speedometer
3. then next select tools drop down to units converter
4. in the box it said tire size calc
5. type in your tire size, example mine is 295 40 R18 once you type it in you get tire height
6. copy that..example mine come up to 27.3
7. click on tools and choose calc
8. take 27.3 divide by 3.73 or 4.1 depend on what set of gear you got i have 4.1 so mine will be 6.66 round it up remember that # go back to speedometer type in 6.66 and click commit done save and upload
hope you understand if not pm me
here is another example of calculation
if my tire were 275/40/r17 and my tire height will be 25.7 , i take 25.7 divide by 3.73=6.89
3.73 is gear
